New Approach for Treating Kaposi Sarcoma

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A sugar-loving protein boosts the growth of Kaposi sarcoma tumors, states research published in Journal of Experimental Medicine. Interfering with these sugary interactions inhibited growth of Kaposi sarcomas in mice, hinting at the potential for new treatment strategies in humans.

New Approach for Treating Kaposi Sarcoma

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KS is a cancer that is associated with infection with a herpes virus called HHV-8 and is prevalent in HIV patients. Effective antiretroviral drugs have decreased the incidence of KS, but the cancer eventually progresses in many patients and treatment options are limited.

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A carbohydrate-binding protein called galectin-1 is released by a variety of tumors and promotes their growth and metastasis. A group of researchers at the University of Buenos Aires in Argentina now finds that blocking galectin-1 in mice bearing established Kaposi sarcomas slowed tumor growth in part by suppressing the formation of blood vessels that feed the tumor.

If the same holds true in humans, drugs targeting galectin-1 could provide new treatment options for patients with KS. These drugs might also hold promise for other diseases characterized by aberrant blood vessel growth, including macular degeneration and cardiovascular diseases.

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